APPENDIX. 199 



2. Salmo Eriox. The Grey. Jaws nearly equal. 

 Color of the back inclining to a black-green ; the 

 sides sometimes of a yellowish tinge ; belly white ; 

 numerous large ash-colored spots above the lateral 

 line. Extremity of the tail nearly straight. Ten 

 rays in the anal fin. Mostly caught from eighteen 

 to twenty-four inches long, and weighing from 

 three to six pounds, though some have been caught 

 weighing from twelve to sixteen. Mostly confined 

 to the northern rivers of Scotland, which it ascends 

 in August. It is chiefly distinguished from the 

 salmon trout by the color and greater number of 

 its spots ; thicker and broader body ; more nume- 

 rous teeth ; and by its lateness in entering the rivers. 

 It is the " SALMO griseus seu cinereous " of Ray ; 

 and it is perhaps the same as the Shewin, which is 

 caught in some of the rivers of Wales. 



3. Salmo Hucho. The bull trout. In color the 

 same as the salmon, from which it is only distin- 

 guished by being of smaller size arid more length- 

 ened shape, having fewer teeth, and only ten or 

 eleven rays in the anal fin. In the Coquet, where 

 it is commonly called a salmon trout, it is mostly 

 caught from eighteen to twenty-two inches long, and 

 weighing from three to five pounds. In Newcastle 

 market it is sold as grilse. There appears to be no 

 real difference between the bull and the salmon 

 trout, and it is probable that they are both only 

 varieties of the salmon, whose growth is impeded 

 by circumstances with which we are unacquainted, 

 or which are only caught when in their first year. 

 Dr. Wm. Turner, a Northumberland man and an 

 eminent naturalist, who lived in the reign of Queen 



